CVE-2020-12244

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-347

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/05/19/3Mailing List, Third Party Advisory
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.htmlVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
https://www.debian.org/security/2020/dsa-4691Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/05/19/3Mailing List, Third Party Advisory
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.htmlVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
https://www.debian.org/security/2020/dsa-4691Third Party Advisory

Timeline

Published: May 19, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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